2.arable farmers have to change over to dairy farming.
种庄稼的农民不得不改而从事乳品业。
3.The soil proved too infertile to sustain real pasture or arable crops.
这土壤被证明太贫瘠,不用作放牧或种植作物。
4.The main conversion types include arable land converting to built-up land, woodland converting to grassland, badland converting to woodland, and paddy land converting to water body.